Nearly 6,200 emails were among a package of documents released Tuesday by the city of Sacramento, detailing Mayor Kevin Johnson's involvement in the collapse of the National Conference of Black Mayors.

The information was released in response to a public records request filed by KCRA 3 Investigates.

A four-slide PowerPoint presentation titled "Annual Meeting 'Coup'" shows it was prepared by the Office of Mayor Kevin Johnson. It even features the city of Sacramento seal.

"It might have used the word 'coup' but I think it was a very thoughtful strategy laid out by the mayor and dozens of mayors to address the issue," said Ben Sosenko, the mayor's press secretary.

"I think once the cold hard facts came back from the troubles that this organization was going through, the only course of action was to remove Ms. Williams and go forward without her," he continued.

The presentation outlines the strategy for "a successful action" with regard to the ouster of Williams, either through vote or legal action.

The emails also reveal how Johnson tried to pressure Williams to quit.

In an August 12, 2013 exchange with another mayor, Johnson writes: "I am going to turn up the heat and try to get Vanessa to resign by Aug. 27 ... any thoughts or ideas u have would be much appreciated."

On Tuesday afternoon, Sosenko emailed the following statement to KCRA 3 Investigates in response to the released documents:

"Mayor Johnson, with the backing of dozens of other mayors, took a thoughtful approach to help create a stronger voice for black mayors across the country. Mayor Johnson worked diligently to fix a broken organization because he believed it was in the best interest of Sacramento."

KCRA 3 asked about whether taxpayer dollars and resources were used for an agenda that may not be well received by the public.

"That's not true. The mayor's priority is always the city of Sacramento. And the organizations that he's always been a part of and has led have always been a part of Sacramento," Sosenko said.

Sosenko also said he was "pretty sure" no paid city staffers were involved the creation of the "coup" presentation.

Documents show NCBM was a group that had financial problems and struggled to recruit active-paying members.

Johnson served as president of the group from May 2013 to May 2014, at which time he founded a different organization called the African American Mayors Association.